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Your guide to 29 wildly different theories of consciousness

Which dog breed stereotypes are true? Here’s the science

What is consciousness? Science faces its hardest problem yet

Science crossword: Consciousness carriers

Readers respond to the October 2025 issue

Poem: ‘E = mc²’

Math puzzle: A winning loser

Life’s evil twins—mirror cells—could doom Earth if scientists don’t stop them

JWST could finally spot the very first stars in the universe

How extremophile molds are destroying museum artifacts

Heal injuries faster with new science

February 2026: Science history from 50, 100 and 150 years ago

A bright light in the dark

New brain training study could help explain the placebo effect

First-ever flexible tool use seen in a cow suggests livestock are smarter than believed

Meet ‘Baseodiscus the Eldest,’ a record-setting ribbon worm more than 27 years old

Spiders build giant decoys to scare predators from webs

EPA rule sparks air quality concerns, cancer survival hits record high, and NASA executes historic space evacuation

NASA’s Artemis II mission to the moon is inching toward the launch pad

World models could unlock the next revolution in artificial intelligence

This gene may determine if dogs have long, floppy ears or short, study ones

RFK, Jr., shifts focus to questioning whether cell phones are safe. Here’s what the science says

It’s so cold in Florida that iguanas might rain from the skies

NASA’s historic Artemis II moon mission is almost ready to launch

Astronomers Spot Mysterious Bar-Shaped Cloud of Iron Inside an Iconic Nebula

Why Are There No Green Stars?

What Is Beige Fat, and Is It Healthy?

In Venezuela, Big Oil Collides with a Hotter Planet

Kratsios Calls Patchwork State AI Laws ‘Anti-Innovation’ at House Science AI Hearing

Incredible Cheetah Mummies Show Big Cats Once Roamed the Arabian Peninsula

A Controversial U.S. Study of Hepatitis B Vaccines Will Continue in Africa, HHS says

JWST’s ‘Little Red Dots’ May Be ‘Black Hole Stars’

At 25, Wikipedia Now Faces Its Most Existential Threat—Generative A.I.

Mosquitoes Show a Clear Preference for Human Blood after Deforestation

Americans Overwhelmingly Support Science, but Some Think the U.S. Is Lagging Behind: Pew

Astronauts Return to Earth in First ISS Medical Evacuation

Astronauts Evacuate the ISS after Medical Incident

Eroding the Clean Air Act Will Make America Sicker, Dirtier and Poorer

Horses Can Smell Your Fear, Bizarre Sweat Study Finds

Trump Administration Reinstates Mental Health and Addiction Grants—Report

Scientists Find Extinct Rhino DNA in Wolf Pup Mummy’s Stomach

NASA Commits to Plan to Build a Nuclear Reactor on the Moon by 2030

Does String Theory Solve the Mystery of the Brain?

T. rex Bones Reveal These Dinosaurs May Have Lived Far Longer Than We Thought

RFK, Jr.’s New Kids’ Vaccine Guidelines Will Worsen Flu and Other Winter Illnesses, Experts Say

Are Seed Oils Bad for You? Debunking a Viral Social Media Myth

2025 Wasn’t the Hottest Year on Record. Earth Is Still Barreling to the Climate Brink

Supermassive Black Hole Sagittarius A* May Have Once Shone 10,000 Times Brighter Than Today

U.S. Greenhouse Gas Emissions Are Rising for the First Time in Two Years—They Could Climb Far Higher